diff options
Diffstat (limited to 'man5/proc_pid_fdinfo.5')
| -rw-r--r-- | man5/proc_pid_fdinfo.5 | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/man5/proc_pid_fdinfo.5 b/man5/proc_pid_fdinfo.5 deleted file mode 100644 index 1eeb895..0000000 --- a/man5/proc_pid_fdinfo.5 +++ /dev/null @@ -1,300 +0,0 @@ -.\" Copyright (C) 1994, 1995, Daniel Quinlan <quinlan@yggdrasil.com> -.\" Copyright (C) 2002-2008, 2017, Michael Kerrisk <mtk.manpages@gmail.com> -.\" Copyright (C) 2023, Alejandro Colomar <alx@kernel.org> -.\" -.\" SPDX-License-Identifier: GPL-3.0-or-later -.\" -.TH proc_pid_fdinfo 5 2023-08-15 "Linux man-pages 6.7" -.SH NAME -/proc/pid/fdinfo/ \- information about file descriptors -.SH DESCRIPTION -.TP -.IR /proc/ pid /fdinfo/ " (since Linux 2.6.22)" -This is a subdirectory containing one entry for each file which the -process has open, named by its file descriptor. -The files in this directory are readable only by the owner of the process. -The contents of each file can be read to obtain information -about the corresponding file descriptor. -The content depends on the type of file referred to by the -corresponding file descriptor. -.IP -For regular files and directories, we see something like: -.IP -.in +4n -.EX -.RB "$" " cat /proc/12015/fdinfo/4" -pos: 1000 -flags: 01002002 -mnt_id: 21 -.EE -.in -.IP -The fields are as follows: -.RS -.TP -.I pos -This is a decimal number showing the file offset. -.TP -.I flags -This is an octal number that displays the -file access mode and file status flags (see -.BR open (2)). -If the close-on-exec file descriptor flag is set, then -.I flags -will also include the value -.BR O_CLOEXEC . -.IP -Before Linux 3.1, -.\" commit 1117f72ea0217ba0cc19f05adbbd8b9a397f5ab7 -this field incorrectly displayed the setting of -.B O_CLOEXEC -at the time the file was opened, -rather than the current setting of the close-on-exec flag. -.TP -.I -.I mnt_id -This field, present since Linux 3.15, -.\" commit 49d063cb353265c3af701bab215ac438ca7df36d -is the ID of the mount containing this file. -See the description of -.IR /proc/ pid /mountinfo . -.RE -.IP -For eventfd file descriptors (see -.BR eventfd (2)), -we see (since Linux 3.8) -.\" commit cbac5542d48127b546a23d816380a7926eee1c25 -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 02 -mnt_id: 10 -eventfd\-count: 40 -.EE -.in -.IP -.I eventfd\-count -is the current value of the eventfd counter, in hexadecimal. -.IP -For epoll file descriptors (see -.BR epoll (7)), -we see (since Linux 3.8) -.\" commit 138d22b58696c506799f8de759804083ff9effae -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 02 -mnt_id: 10 -tfd: 9 events: 19 data: 74253d2500000009 -tfd: 7 events: 19 data: 74253d2500000007 -.EE -.in -.IP -Each of the lines beginning -.I tfd -describes one of the file descriptors being monitored via -the epoll file descriptor (see -.BR epoll_ctl (2) -for some details). -The -.I tfd -field is the number of the file descriptor. -The -.I events -field is a hexadecimal mask of the events being monitored for this file -descriptor. -The -.I data -field is the data value associated with this file descriptor. -.IP -For signalfd file descriptors (see -.BR signalfd (2)), -we see (since Linux 3.8) -.\" commit 138d22b58696c506799f8de759804083ff9effae -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 02 -mnt_id: 10 -sigmask: 0000000000000006 -.EE -.in -.IP -.I sigmask -is the hexadecimal mask of signals that are accepted via this -signalfd file descriptor. -(In this example, bits 2 and 3 are set, corresponding to the signals -.B SIGINT -and -.BR SIGQUIT ; -see -.BR signal (7).) -.IP -For inotify file descriptors (see -.BR inotify (7)), -we see (since Linux 3.8) -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 00 -mnt_id: 11 -inotify wd:2 ino:7ef82a sdev:800001 mask:800afff ignored_mask:0 fhandle\-bytes:8 fhandle\-type:1 f_handle:2af87e00220ffd73 -inotify wd:1 ino:192627 sdev:800001 mask:800afff ignored_mask:0 fhandle\-bytes:8 fhandle\-type:1 f_handle:27261900802dfd73 -.EE -.in -.IP -Each of the lines beginning with "inotify" displays information about -one file or directory that is being monitored. -The fields in this line are as follows: -.RS -.TP -.I wd -A watch descriptor number (in decimal). -.TP -.I ino -The inode number of the target file (in hexadecimal). -.TP -.I sdev -The ID of the device where the target file resides (in hexadecimal). -.TP -.I mask -The mask of events being monitored for the target file (in hexadecimal). -.RE -.IP -If the kernel was built with exportfs support, the path to the target -file is exposed as a file handle, via three hexadecimal fields: -.IR fhandle\-bytes , -.IR fhandle\-type , -and -.IR f_handle . -.IP -For fanotify file descriptors (see -.BR fanotify (7)), -we see (since Linux 3.8) -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 02 -mnt_id: 11 -fanotify flags:0 event\-flags:88002 -fanotify ino:19264f sdev:800001 mflags:0 mask:1 ignored_mask:0 fhandle\-bytes:8 fhandle\-type:1 f_handle:4f261900a82dfd73 -.EE -.in -.IP -The fourth line displays information defined when the fanotify group -was created via -.BR fanotify_init (2): -.RS -.TP -.I flags -The -.I flags -argument given to -.BR fanotify_init (2) -(expressed in hexadecimal). -.TP -.I event\-flags -The -.I event_f_flags -argument given to -.BR fanotify_init (2) -(expressed in hexadecimal). -.RE -.IP -Each additional line shown in the file contains information -about one of the marks in the fanotify group. -Most of these fields are as for inotify, except: -.RS -.TP -.I mflags -The flags associated with the mark -(expressed in hexadecimal). -.TP -.I mask -The events mask for this mark -(expressed in hexadecimal). -.TP -.I ignored_mask -The mask of events that are ignored for this mark -(expressed in hexadecimal). -.RE -.IP -For details on these fields, see -.BR fanotify_mark (2). -.IP -For timerfd file descriptors (see -.BR timerfd (2)), -we see (since Linux 3.17) -.\" commit af9c4957cf212ad9cf0bee34c95cb11de5426e85 -the following fields: -.IP -.in +4n -.EX -pos: 0 -flags: 02004002 -mnt_id: 13 -clockid: 0 -ticks: 0 -settime flags: 03 -it_value: (7695568592, 640020877) -it_interval: (0, 0) -.EE -.in -.RS -.TP -.I clockid -This is the numeric value of the clock ID -(corresponding to one of the -.B CLOCK_* -constants defined via -.IR <time.h> ) -that is used to mark the progress of the timer (in this example, 0 is -.BR CLOCK_REALTIME ). -.TP -.I ticks -This is the number of timer expirations that have occurred, -(i.e., the value that -.BR read (2) -on it would return). -.TP -.I settime flags -This field lists the flags with which the timerfd was last armed (see -.BR timerfd_settime (2)), -in octal -(in this example, both -.B TFD_TIMER_ABSTIME -and -.B TFD_TIMER_CANCEL_ON_SET -are set). -.TP -.I it_value -This field contains the amount of time until the timer will next expire, -expressed in seconds and nanoseconds. -This is always expressed as a relative value, -regardless of whether the timer was created using the -.B TFD_TIMER_ABSTIME -flag. -.TP -.I it_interval -This field contains the interval of the timer, -in seconds and nanoseconds. -(The -.I it_value -and -.I it_interval -fields contain the values that -.BR timerfd_gettime (2) -on this file descriptor would return.) -.RE -.SH SEE ALSO -.BR proc (5) |